Home / 3,931.82-5,426.16-2,163.54

Finding the Fourth Proportional to 3,931.82, 5,426.16 and 2,163.54

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Solution

The fourth proportional to 3,931.82, 5,426.16 and 2,163.54 is: 2,985.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.82 : 5,426.16 = 2,163.54 : x
  2. Step 2: Convert to fraction form
    3,931.82/5,426.16 = 2,163.54/x
  3. Step 3: Cross multiply
    3,931.82x = 5,426.16 × 2,163.54
  4. Step 4: Simplify right side
    3,931.82x = 11,739,698.91
  5. Step 5: Solve for x
    x = 11,739,698.91/3,931.82
  6. Step 6: Final answer
    x = 2,985.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.